Steam-generator.



, v P. H. WHITE.

STEAM GENERATOR.

lApplicgtion filed Sept 7, 19Q1.) (No Model.) I

I Patented Aug; 26, |902.

2 Shests-Sheet l. 2'a

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Emma V i MflZa- III II II n- 37 -UNITED STATES PATENT OFFICE.

PAUL H. WHITE, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO WHITE STEAM WAGON COMPANY, OF INDIANAPOLIS, INDIANA, A CORPORATION OF INDIANA.

STEAM -o EN ERATO R.

SPECIFICATION forming part of Letters Patent No. 707,996, dated August 26, 1902. Original application filed May 27, 1901, Serial No. 62,038. Divided and this application filed September 7, 1901. Serial To all whom, it may concern:

Be it known that I, PAUL H.WHITE, a citi zen of the United States, residing at Indians. apolis, in the county of Marion and State of Indiana, have invented a new and useful Steam-Generator, of which the following is a specification.

My invention relates to an improvement in steam-generators in which it is desired to pro- IO duce steam rapidly and at high pressure.

The present application is a'diyision of my application, Serial No. 62,038, filed May 27, 1901, and relates to the peculiar arrangement and construction of the furnace.

The generator has been especially-designed for use in connection with automobiles, although of course it is not necessarily limited to such use. In generators-designed for this use the steam consumption varies greatly, and

it is requisite that the furnace. be of such character as to enable the production .of a rapid and intense fire. Great difficu-lty has been encountered heretofore;however,in the use of other than liquid fuels in steam-gen- 2 5 erators for this purpose, for the reason that if a fire of sufficient intensity be provided to maintain steam at the proper pressure while the engine is being operated the pressure rises very rapidly and the generator fblows offsteam almost immediately upon shutting off steam from the engine. So far as I know no construction has heretofore been provided by which the heat from the furnace may be deflected from the generator, so as to prevent the circulation of heat about or through the main body of the generator, but at the same time keep the generator at such temperature as to maintain the steam-pressure.

The object of my invention is to construct a furnace capable of along maintenance of. a fire and to provide means for preventing the circulation of heatfrom the fire between the water-tubes or about or through the main body of the generator and to provide for a supplemental outlet sufficient to keep the fire and to maintain pressure in the generator.

The accompanying drawings illustrate my invention. a

Figure 1 is a side elevation, a portion of the surrounding casing of the generator having (N0 model.)

been removed. Fig. 2 is a section on line 2 2 of Fig. 1.

In the drawings, 3 indicates the tubes of a water-tube generator, which tubes are surrounded by asuitable casing 4, from the upper part of which leads-a main flue or outlet 5. Mounted below the generator at the lower end of the casing 4c'is any suitable form of grate, preferably that which forms the subject-matter of my pending application, Serial No. 74,682.

Leading from the combustion-chamber 6 is a supplemental fine or outlet 7, which leads from a point below the main body of the generator upward to the flue 5, said supplemental flue being preferably lined, both inside and out, with an insulator, such as sheetasbestos 9. At the point where the supplemental fiue 7 joins the main flue 5 I mount a damper 10, which damper may be thrown so as to close either the flue 7 or the flue 5. When the damper 10 is thrown so as to close flue 7, all of the heat from the furnace passes upward between the water-tubes or through the body of the generator and out through the 7 5 fiue 5. If thedamper 10 be thrown so as to close flue 5, however, a sufficient draft is maintained through flue 7 to maintain a fire; but at the same time the circulation of heat through the body of the generator is prevented, sufficient heat being, nevertheless, maintained about the bodyof the generator to maintain or practically maintain the steam"- pressure. It will be noticed that the supplemental flue when open leads the heated gases 8 5 away from the body of the generator, so that as soon as the said fine is opened and the main flue closed the action is substantially equal to a sudden drawing of the fire, yet there is sufficient heat maintained in the 0 body of the generator to keep up the steampressure. The supplemental fine makes it possible to maintain the fuel in good burning condition without an excess of heat in the generator, so that when the consumption of 5 steam is again resumed the fire is in proper condition to produce an adequate supply of steam.

Although I have shown my invention as applied to a water-tube generator,the arrange 1 on ment is equally applicable to any type of steam-generator.

I claim as my invention 1. In a steam-generator, the combination with a furnace, of a main outlet leading therefrom above the body of the generator, a supplemental outlet leading from the furnace below the body of the generator, and means for controlling the passage of heat through the outlets so that when the main outlet is closed a non-circulating heat will be maintained in the body of the generator.

2. In a steam-generator, the combination with the main body of the generator, of a furnace, an outlet leading through the main body of the generator, a supplemental outlet passing around the main body of the generator, and means arranged above the main PAUL I-I. WHITE.

\Vitnesses:

ARTHUR M. H001), BERTHA M. BALLARD. 

